import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

@WebServlet("/autoRefresh")
public class AutoRefreshServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.setHeader("Refresh","1");// 每隔 1秒刷新一次
        Date date = new Date();
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd  HH:mm:ss");
        resp.setContentType("text/text; charset=utf8");
        resp.getWriter().write("当前时间为: " + format.format(date));
    }
}
